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Kawasaki KX125

From Wikipedia, the free encyclopedia

The Kawasaki KX125 is a two-stroke, motocross motorcycle produced by Kawasaki from 1974 to 2008. KX125 was developed as a lightweight, high-performance bike aimed at competitive riders in the 125cc class. Over its three-decade production run, it underwent numerous technical and design updates to remain competitive with offerings from Honda, Yamaha, Suzuki, and KTM.

In 2005, Kawasaki discontinued the KX125, aligning with a broader industry shift away from two-stroke engines in favor of four-stroke technology. The model was succeeded in part by the KX250F, a four-stroke motocross bike that continues to be part of Kawasaki.

Jeff Emig, Ricky Carmichael, and James Stewart, competed on KX125s early in their careers.

Technical Specifications

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Liquid-cooled, single-cylinder, two-stroke engine paired with a six-speed transmission. Its design emphasized agility and responsiveness, with a lightweight frame and long-travel suspension suited for aggressive motocross riding. In later years, Kawasaki incorporated upside-down (inverted) forks, aluminum perimeter frames, and improved carburetion to boost performance and handling.

The motorcycle was known for its high-revving engine, making it popular among racers and enthusiasts.